Why is the "Parent" underlined red? (Solved)

Why is the "Parent" in the third block underlined red? (It isn't underlined in scriptinghelpers)

local Parent = script.Parent

Parent.MouseEnter:Connect(function(x, y)
    Parent.Position = UDim2.new(0, 0, 0.5, 0)
   
    wait()
 
    Parent:TweenPosition(UDim2.new(0.05, 0, 0.5, 0))
    Parent.WooshSound:Play()

Parent.MouseLeave:Connect(function(x, y)
    Parent.Position = UDim2.new(0, 0, 0.5, 0)
   
    wait()
 
    Parent:TweenPosition(UDim2.new(0.5, 0, 0.5, 0))
    Parent.WooshSound:Play()

end

Parent.MouseButton1Click:Connect(function()
    Parent.Image = "rbxgameasset://Images/SoundIconClicked"
	Parent.ClickSound:Play()
	wait()
	Parent.Image = "rbxgameasset://Images/SoundIcon"
end)